Drilling-machine



1. t e e h s e e h S 2 Lm E G MA MM BG Rm .u D .u d o M 0 W PatentedSept. 1.1, 1894.

No. 525,742.l

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N. REMMEL. DRILLING MACHINE.

Patented Sept. 11, 1894.

UNITED STATES PATENT OFFICE.

NICHOLAS REMMEL, OF KEWASKUM, WISCONSIN.

DRlLLING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 525,742, datedSeptember 11, 1894.

Application filed January 20, 1894. Serial No. 497,521. (No model.)

To all whom it may concern:

Be it known that I, NICHOLAS REMMEL, a citizen of the United States, anda resident of Kewaskum, in the county of Washington, and in the State ofWisconsin, have invented certain new and useful Improvements inDrilling-Machines; and I do hereby declare that the following is a full,clear, and exact description thereof.

My invention has for its object to provide a simple economical boringmachine that may be driven by hand or power and in which the elevationof the tool may be governed by hand or foot at the will of the operator,said invention consisting in certain peculiarities of construction andcombination of parts hereinafter described with reference to theaccompanying drawings and subsequently claimed.

In the drawings: Figure l represents a side elevation of my improvedboring machine partly in section; Fig. 2, a front elevation of the samepartly in section; Fig. 3, a detail View partly in section illustratinga toolstock head constituting part of the machine; Fig. 4, a detailsection on line 4-4 of the first figure; Fig. 5, a like viewillustrating the work-table bracket and its connections; Fig. 6, adetail transverse section taken on line 6-6 of the preceding gure, andFig. 7, an under side view of a clamp-washerembodied in said machine.

Referring by letter'to the drawings A represents the base and B thestandard of my machine. Extending outward from the front of the standardare parallel bearing blocks O held in place by screws or other suitablemeans, and j ournaled in these blocks is a vertical rod D to which anadjustable bracket E for a work-table F is clamped, this bracket beingbest illustrated in Fig. 5.

The outer end of the bracket E is in the form of a fork provided with aninterior countersunk ledge b upon which the hub c of the work-table issupported, and held in place by means of a screw d that passes upthrough a clamp-washer G into said hub. The clampwasher impinges againstthe under face of the ledge b in the fork-end of bracket Eand apreferably angular central socket in said washer receives thecorresponding head of the screw cl.y Consequently the work-table may bepositioned without the employment of a tool to hold or operate saidscrew, it only being necessary to revolve said table in the properdirection to tighten or loosen the connection, thisbeing one of thenovel features of my invention. The table herein shown is intended forthe support of metal work, but one suitable for wood-work may be readilysubstituted.

AProjecting from the front of the standard above the Work-table is acasting H held in place by screws or other suitable means. Branches e f,of the casting have their outer terminals in the form of guides g, andon a line intermediate of the guides said casting v is provided withbearings h for a horizontal shaft I the latter being fast at one end ina fiy-wheel J and belt-pulley K of ordinary construction. The other endof the shaft I carries a pinion L in mesh with a gear-wheel M that isfast on a spindle having its bearing in an arm N that is bolted orotherwise suitably joined to the casting H above specified, andconnected to the outer end of the spindle is a hand-crank O that ispreferably adjustable as to throw. The gear-wheel M is also in mesh witha pinion P splined on a stock Q for the boring tool R, the head and bodyof this tool-stock being loose in the guides g above specified.

From the foregoing it will be understood that a rotation may be impartedto the toolstock byhand through the medium of the crank O or by a motorhaving belt-connection with the pulley K on the horizontal shaft.

Comprising the toolstock head is a pair of sleeves-S, T, in screw-threadengagement, the former sleeve being loose on the tool-stock properbetween fixed collars i and provided at its lower end with a hand-wheelU that is in one piece therewith or otherwise rigidly connected thereto.The thread of the sleeve Sis external and continues the entire length ofsaid sleeve above the hand-wheel, but the thread of the sleeve T isinternal and terminates a certain distance above the lower end of thesame, the remainder of the bore of this latter sleeve being of suicientdiameter to permit travel of the upper toolstock collar therein.

The sleeve T has loose engagement with the upper one of the guides g,setforth in the foregoing, and a shoulder j at the lower end IOO of saidsleeve opposes said guide to limit upward movement'of the former in thelatter and a set screw lo in this shouldered portion of the sleeve maybe employed to lock both sleeves together.

Pivotally connected to the shouldered portion of the sleeve T is a pairof curved arms V likewise connected to a pair of vertical rods W, and apair of links X is employed to con` nect said arms to the outer bearingin which the horizontal shaftl revolves. The vertical rods W arearranged within the standard of the machine and joined midway of theirlength by a brace m, the latter and an eye 'n or other suitable deviceon said standard being connected by a spiral spring Z of suitable power.Another brace p connects the lower ends of the vertical rods W and Iprefer to provide the latter with spring-feet r to cushion their descentwhen retracted by the spring. The shank s of a foot-treadle Y has arecess adjacent to its inner end for engagement with the lower brace pbetween the vertical rods W and another recess in the treadle shank isfor engagement with a fulcrum t on the base of the machine. Thetreadle-shank extends through 'a suitable aperture in themachine-standard and the recesses in said shank being reverse to eachother, it will be seen that the treadle may be readily put in or out ofposition without the use of tools, this being one of the especialfeatures of my invention.

From the foregoing it will be readily understood that the tool may begiven a positive vertical adjustment by a rotation of the hand-wheelconnected to the innermost sleeve of the tool-stock head, and bothsleeves being locked together said tool may be fed to the work by amovement of the foot-treadle against the power of the spring Z, thelatter acting to cause an automatic retraction of the aforesaid toolwhen pressure is removed from said treadle. However the result of thetreadle-movement is the same whether the sleeves comprised in thetool-stock head be in or out of lock, but it is preferable to have themin lock to prevent any possibility of rotary motion on the part of theinner sleeve when it is not desirable to utilize the handwheel as ameans for bringing the tool in and out of engagement with the work, asis preferable when the machine is employed on heavy material.

From the foregoing it will be seen that I make provision forreciprocating the tool by two mechanical movements either or both ofwhich may be utilized in the same machine, and this is also one of theimportant features of my invention.

Having now fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

1. A boring machine having a horizontd bracket fork-shaped at its outerend and the fork provided with an interior 1edge,a. Worktable supportedon the ledge, a clamp-washer impinged against the under face of saidledge, and a screw that extends through the washer into the table,whereby this table may be turned in one direction to tighten and in theopposite direction to loosen, substantially as set forth.

2. A boring machine having a. horizontal bracket fork-shaped at itsouter end and the fork provided with an interior ledge, a worktablesupported on the ledge, an angnlrll recessed clamp-washer impingedagainsttlke -under face of said ledge, and a screw thnteltends throughthe Washer into the table lidi 8| has ahead fitting thewasher-recesasaidtlble `being turned in one direction to tighten .nir

in the opposite direction to loosen, substln tially as set forth.

3. A boring machine having a tool-stm 3g provided with a head comprisinga pair 0f i sleeves in screw-thread engagement, suitlble means forlocking one sleeve to the othernd;

va treadle-controlled mechanism connectetm the outer sleeve the partsbeing combinedslb 91 stantially as set forth.

4. A boring-machine having a tool-steek.-

`provided with a head comprising a pair 0i 'combined substantially asset forth.

5. Aboring-machinecomprisinga basend standard, a vertically adjustablework-tabl.. u and stationary guides, a longitudinally l' j ustabletool-stock having its body and M loose in the guides, a pair of armspivotll` connected to the tool-stock head, verticalrede likewiseconnected to the arms, a spring me u necting the rods and standard, atreadle-lr nected to said rods, a pair of links connecting said arms anda stationary part of the llachine, a gear-mechanism for rotating the hebstock, a hand-crank forming part of theglyx mechanism, and amotor-connecting devine.. also forming part of said gear-mechanim,substantially as set forth.

In testimony that I claim the foregoing] have hereunto set my hand, atWest Bend,in x1 the county of Washington and State of Wilconsin, in thepresence of two Witnesses.

NICHOLAS REMMEL.

